video very small

[jimw]

I'm running mame + mamewah on windows XP.  When playing certian games the output on the monitor is very small to hard to play. I think it is because the monitor should be vertical like pac man or donkey kong but when playing games where it is horizontal looks great. How can I correct this?

jim

[Q*Bert_OP]

is there a graphics card installed, or onboard graphics?

[jimw]

graphics card installed. I turned off the one on the mother board and add a Matrox Graphics Millennium card.

[Q*Bert_OP]

hmmm...